Ventilating window-lock.



A LYONS.

VENTILATING WINDOW LOCK.

APPLICATION FILED MAR-4 1916- 1,186,322. Patented June 6, 1916.

Arron/ E? AARON LYON'S, OF NORWALK. CONNECTICUT.

VENTILATING WINDOW-LOCK.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed March 4, 1916. Serial No. 82,080.

To all whom it may concern Be it known that I, AARON LYONS, a citizen of the United States, residing'at Norwalk, county of Fairfield, State of Connecticut, have invented an Improvement in Ventilating Window-Locks, of which the following is a specification.

This invention has for its object to provide a ventilating window lock which shall be a carrying forward of the principle of an ordinary turn-button fastener for the meeting rails of sashes, which shall be so simple to produce that it can be sold at a low price, will be durable and practically impossible to get out of repair, and which will securely lock the sashes in the closed position or in a partly open position, so that while the sashes may be moved upward or downward together, they cannot be moved in either direction relatively to each other.

With this end in view I have devised the novel ventilating window lock which I will now describe, referring to the accompanying drawing forming a part of this specification and using reference characters to indicate the several parts.

Figures 1 and 2 are perspectives from different points of view of the upper sash member; Fig. 3 a sectional view showing the sashes locked in the ventilating position; Fig. 4 a perspective view on a reduced scale showing the sashes locked in the ventilating position, and Fig. 5 is a similar view showing'the sashes locked in the closed position.

denotes the catch member adapted for attachment to the lower rail of the upper sash, and 11 the button member adapted for attachment to the upper rail of the lower sash. Member 10 comprises a plate 12 pro vided with screw holes for attachment, and with a hook-shaped catch 13. Member 11 comprises a plate 14 adapted for attachment to the upper rail of the lower sash and having pivoted thereto a button 15 provided with a finger piece 16. for convenience in operation and with a cam flange 17 which is adapted to be turned into engagement with catch 13 and acts to. force the lower sash downward and the upper sash upward 5 impossible from the outer side without breaking the glass, Thi structure is well known and many thousands of them are in use.

My invention consists in providing a swinging arm 18 which is pivoted to the back of catch member 10 and is provided at its upper end with a hook-shaped catch 19 which is adapted to be engaged by cam flange 17 of the button, in the same manner that catch 13 is engaged- At the proper distance below catch 19 is a ledge 20 which is adapted to be engaged by the under side of the cam flange, so that the flange is in fact locked between the catchvand the ledge when the parts are in the ventilating position, in which position neither sash can be moved relatively to the other without swinging the button to the unlocking position. The swinging arm is made long enough to permit the upper sash to be lowered or the lower sash to be raised, or both sashes to be moved to a ventilating position and locked together, leaving the sashes free to be moved upward or downward when locked together,

but is of course not long enough to permit the button to be reached from the outside from either above or below by pushing the two sashes to the extreme of their movement. When the swinging arm is not in use, or when it is desired to use the fixture as an ordinary window lock, the swinging arm is turned downward parallel with the lower meeting rail of the upper sash, so that it is entirely out of the way, as clearly shown in Fig. 5. The swinging arm may be provided with a lug 21,'which when the arm is in the raised position, as in Fig. 2, will engage the lower meeting rail of the upper sash and prevent the arm from being swung over past the vertical position.

Having thus described my invention, I claim:

1. A ventilating window lock comprising a catch member provided with a relatively thin upright portion having its upper extremity shaped to form a forwardly extended hook, a relatively thin flat arm positioned with its wider portion parallel with the rear face of the catch member, and having its upper extremity shaped to form a forwardly extended hook overhanging the hook of the catch member, a pivot member connecting said catch member with the other end of said arm, the wide front face of the arm being in contact with the rear face of the catchmember, the extremity of the pivot end of said arm being shaped to limit pivs otal movement of the arm in one direction, and a button member positioned to engage either the hook portion of said arm or the hook of the catch member.

2. A ventilating window lock comprising a catch member provided with a relatively thin upright portion having its upper extremity shaped to form a forwardly extended hook, a relatively thin flat arm positioned with its wider portion parallel with the rear face of the catch member, and having its upper extremity shaped to form a forwardly extended hook overhanging the hook of the catch member a pivot member connecting said catch member with the other end. of said arm the wide front taceot' the arm being in contact with the rear face of the catch member, the extremity of the pivot end Cf said arm being shaped to limit pivotal movement of the arm in one direction, a button member positioned to engage either the hook portion of said arm or the hook of the catch member, the front face of said arm being provided with a forwardly extended transverse ledge extending beneath the hook end of the arm.

In testimony whereof I aflix my signature.

AARON LYONS.

Copies of thin patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D, Q. 

